ANORDNING VED SKYGGEGITTER FOR ELEKTRONKANON AV DUALMODUS-TYPEN

ANORDNING VED SKYGGEGITTER FOR ELEKTRONKANON AV DUALMODUS-TYPEN

A dual-mode electron gun for a traveling-wave tube is disclosed which selectively generates an electron beam of two different cross-sectional areas. The electron gun includes radially inner and annular control grids as well as a shadow grid disposed between the cathode and the control grids along th...

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1. Verfasser: AMBOSS, KURT
Format: Patent
Sprache:nor
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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creator AMBOSS, KURT
description A dual-mode electron gun for a traveling-wave tube is disclosed which selectively generates an electron beam of two different cross-sectional areas. The electron gun includes radially inner and annular control grids as well as a shadow grid disposed between the cathode and the control grids along the electron beam path. The shadow grid is provided with a suppressor ring which precludes electron emission from an annular portion of the cathode immediately radially outwardly of the cathode region over which the inner control grid projects, thereby eliminating generation of a spurious beam portion radially outwardly from the desired smaller cross-section beam.
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The electron gun includes radially inner and annular control grids as well as a shadow grid disposed between the cathode and the control grids along the electron beam path. The shadow grid is provided with a suppressor ring which precludes electron emission from an annular portion of the cathode immediately radially outwardly of the cathode region over which the inner control grid projects, thereby eliminating generation of a spurious beam portion radially outwardly from the desired smaller cross-section beam.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record>
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
title ANORDNING VED SKYGGEGITTER FOR ELEKTRONKANON AV DUALMODUS-TYPEN
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